In the following essay, Chenieux-Gendron looks at "the massive denial of prohibition" as a driving force behind Surrealism.

Three great systems of exclusion and division allow the human word to lay claim to purity: the play of prohibitions, the strongest of which is the prohibition of desire; the division between reason and madness; and the will to truth.

We know perfectly well that we are not free to say
just anything, that we cannot simply speak of anything,
when we like or where we like; not just anyone,
finally may speak of just anything. We have
three types of prohibition, covering objects, ritual
with its surrounding circumstances, the privileged or
exclusive right to speak of a particular subject; these
prohibitions interrelate, reinforce and complement
each other, forming a complex web, continually subject
to modification.

These prohibitions certainly surround the act of speech in a very powerful way. Moreover...